Spring-hinge



(No Model.)

L. M. DEVORE.

SPRING HINGE.

Patentecll Nov. 13, 188,8.

milnrrnn rares r @here T l ATH SPRlNGnHlNGE.

SPECIFICATION forming part of Letters Patent No. 392.667, dated November 13, 1888.

Application filed March 26, 1887. Serial No. 282.507.

.To all whom it may concern:

Beit known that I, LEVI M. Dnvonn, residing at Freeport, in the county of Stephenson and State of Illinois, and a citizen of the United States, have invented new and useful Improvements in Spring-Hinges, of which the following is a specification, reference being had to the accompanying drawings,in which- Figure l is a front elevation; Fig. 2, a crosssection showing the parts in position when the door` is closed; Fig. 3, a cross-section showing the parts in position when the door is open; Fig. 4, a longitudinal section through thearbor and spring; Fig. 5, a detail showing a form of the connecting-link between the arbor and hingeleaf; Fig. 6, a perspective view of the detached or independent arbor; Fig. 7, a modification in the form of the arbor; Fig. 8, another modification in the form of the arbor.

This invention relates to that class of hinges in which a spring is'combined with the leaves ofthe hinge to act and hold a door or other object either closed or open, and in which the spring has a movement whollyindependent of the movement ofthe hinge-pivots. This class of spring hinges has heretofore been constructed to employ a spring made of coiled wire, and in use it has been found necessary, in order to maintain the spring in alignment with the hinge-pivots, to provide a frame or other connection by which the torsional action of the spring is prevented from throwing the body of the spring to one side of the line of the pivots or hinge-pintles.

This invention has for its objects to construct a hinge employing a spring for holding the hinge in its open or closed positions, and at the same time have the spring in proper alignment with the hinge pivots or pintles whether the hinge is opened or closed, with a connection to oneleaf only of the hinge, dispensing with the use of a frame or other connection, as has heretofore been required to prevent the throwing of the spring ont of alignment, and a further object is to overcome the objection ofthe torsional strain and to irnprove the construction and operation of the hinge as a whole; and its nature consists in the several parts and combinations of parts hereinafter described, and pointed out in the claim as new.

(No model.)

shown in Fig. 6, having a longitudinal slot, b,

with a square tenon, b, at each end, or which can be formed of two halves, as shown in Fig. 7, the square tenons b being formed partly on each half of the arbor, or it can be formed, as shown in Fig. 8, of two pieces, so that when together they will be disconnected at the center, or such arbor can be otherwise formed to be independent and adapted for attachment to one end of the operating-spring.

C represents the links, one for each end of the arbor B, for connecting the arbor with one leaf of the hinge. Each link for use with the arbor having a square tenon, b, is provided with asquare hole, c', to receive the tenen b', and each link has an extension terminatingin a hook, c, for connecting the links C with the rod c3 on one of the hinge-leaves, and, as shown, each link (l is provided with a semicircular ilange, c, to encircle the end of the spring; but such flange can be omitted, if so desired, without affecting the operation of the spring.

D represents the operatingspring, formed of a strip of steel wound in a helix or a clockspring form, and of a length to fit between the links C around the arbor B. As shown, the spring Dis connected with the arbor B by turning the end d and entering it in the slot b or by inserting such end between the halves of the arbor shown in Fig. 7. The outer end of the spring D is bent to form a half-loop, d', which partly encircles the rod d on the hingeleaf not having the rod 0', as shown in Figs. 2 and 3.

Each leaf is provided with screw-holcs or other means for attachment of the hinge to a door or other object, and the parts are assembled by placing the two leaves together, connecting the end d of the spring with the ar bor B, and attaching the leaves by the links G, or otherwise, to the arbor, and then connecting either the link or the spring with the hinge-leaf and drawing the parts for connection with the other hinge-leaf, and when together the form of the spring is one which will draw uniformly and without torsional action o" c, tl

1e rod 0', connected with one of the that will tend to throw the spring ont of alignleaves, A, with which rod the said hooks eninent, the result being that in use the spring is gage, the rod d, connected to the other leaf, r 5 maintained in proper alignment with the hinge A', the independent arbor B, connecting the 5 pivots or pintles under all circumstances and clips C C together, and the helical spring I),

is effectual and reliable for the purpose for one end of which is connected directly With which it is intended. the arbor B, while the other end is connected What I claim as new, and desire to secure with the bar d, substantially as described. by Letters Patent, is-

LEVI M. DEVORE. 1o In a spring-hinge, the combination of the Vitnesses:

leavesA A', having ears c a', united by the ALBERT II. ADAMS, pivots a, the clips C C, provided with hooks HARRY T. JONES. 

